【Problem Description】
Define the table class TableInfo, the attributes include the number of legs (int legs) and the height (double height), and add the corresponding construction method and the display() method for displaying table information to the table class. Taking the TableInfo class as the parent class, the RectTable class and the Round Table class are inherited. The RectTable class has new attributes of length (double length) and width (double width), and the Round Table class has a new attribute of radius (double radius). Design the test class, create objects of the square table class and round table class respectively, and output the corresponding table information.
The main method in the test class is written as follows, do not modify the code other than comments, otherwise points will be deducted! ! ! Delete Chinese comments when submitting
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【Input form】
None
[output format]
legs:4
height:1.2
legs:3
height:0.5
radius:0.4
Note: Inheritance and super() must be used, otherwise points will be deducted.
import java.io.IOException;
/*定义桌子类TableInfo，属性有腿数（int legs）和高度（double height），
为桌子类添加相应的构造方法和显示桌子信息的display()方法。以TableInfo类为父类，
继承得到方桌类（RectTable）和圆桌类（RoundTable），方桌类新增属性长（double length）和宽（double width），
圆桌类新增属性半径（double radius）。设计测试类，分别创建方桌类和圆桌类的对象，输出对应的桌子信息。*/
public class two {
public static void main(String[]args) {
//方桌的腿数是4，高1.2，长1.6，宽0.8
RectTable rt = new RectTable(4,1.2,1.6,0.8);
rt.display();
//圆桌的腿数是3，高0.5，半径是0.4
RoundTable round = new RoundTable(3,0.5,0.4);
round.display();
round.displayRound();
}
}
class TableInfo{
private int legs;
private double height;
public TableInfo(int legs, double height) {
this.legs = legs;
this.height = height;
}
public void display(){
System.out.println("legs:"+legs);
System.out.println("height:"+height);
}
}
class RectTable extends TableInfo{
private double length;
private double width;
public RectTable(int legs,double height,double length,double width){
super(legs,height);
}
}
class RoundTable extends TableInfo{
private double radius;
public RoundTable(int legs,double height,double radius) {
super(legs,height);
this.radius = radius;
}
public void displayRound(){
System.out.println("radius:"+radius);
}
}